{"id":162854,"date":"2026-02-26T23:11:54","date_gmt":"2026-02-26T21:11:58","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/ataka-airsnitch-pozvolyayushhaya-obojti-izolyacziyu-mezhdu-klientami-v-wi-fi"},"modified":"2026-02-26T23:11:54","modified_gmt":"2026-02-26T21:11:58","slug":"ataka-airsnitch-pozvolyayushhaya-obojti-izolyacziyu-mezhdu-klientami-v-wi-fi","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/ataka-airsnitch-pozvolyayushhaya-obojti-izolyacziyu-mezhdu-klientami-v-wi-fi","title":{"rendered":"AirSnitch t\u00e1mad\u00e1s, amely megker\u00fcli a kliensek k\u00f6z\u00f6tti elszigetel\u00e9st Wi-Fi-n","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

A kaliforniai Riversidei Egyetem kutat\u00f3i kifejlesztettek egy \u00faj t\u00e1mad\u00e1si oszt\u00e1lyt vezet\u00e9k n\u00e9lk\u00fcli h\u00e1l\u00f3zatokra \u2013 az AirSnitch-t. Ezek a t\u00e1mad\u00e1sok lehet\u0151v\u00e9 teszik a Wi-Fi h\u00e1l\u00f3zatok \u00fcgyfeleinek elszigetel\u0151 mechanizmusainak megker\u00fcl\u00e9s\u00e9t, amelyek megakad\u00e1lyozz\u00e1k, hogy az \u00fcgyfelek k\u00f6zvetlen\u00fcl kapcsolatba l\u00e9pjenek egym\u00e1ssal. A legrosszabb forgat\u00f3k\u00f6nyv eset\u00e9n a t\u00e1mad\u00e1sok lehet\u0151s\u00e9get adnak a t\u00e1mad\u00f3nak, hogy a c\u00e9lpont forgalm\u00e1t (MITM) mag\u00e1n kereszt\u00fcl ir\u00e1ny\u00edtsa, hogy elemz\u00e9shez vagy titkos\u00edtatlan k\u00e9r\u00e9sek m\u00f3dos\u00edt\u00e1s\u00e1hoz hozz\u00e1f\u00e9rjen, valamint DNS-cache m\u00e9rgez\u00e9ssel manipul\u00e1lja a webhelyekhez val\u00f3 hozz\u00e1f\u00e9r\u00e9seket. <\/p>\n

A t\u00e1mad\u00e1sok v\u00e9grehajt\u00e1s\u00e1hoz a t\u00e1mad\u00f3nak csatlakoznia kell ugyanahhoz a vezet\u00e9k n\u00e9lk\u00fcli h\u00e1l\u00f3zathoz, mint az \u00e1ldozat, vagy egy vend\u00e9g h\u00e1l\u00f3zathoz, amelyet ugyanaz a hozz\u00e1f\u00e9r\u00e9si pont szolg\u00e1l ki. P\u00e9ld\u00e1ul ezek a t\u00e1mad\u00e1sok nyilv\u00e1nos wifi h\u00e1l\u00f3zatokban is alkalmazhat\u00f3k. A Netgear, Tenda, D-LINK, TP-LINK, ASUS, Ubiquiti, LANCOM \u00e9s Cisco 9 tesztelt vezet\u00e9k n\u00e9lk\u00fcli hozz\u00e1f\u00e9r\u00e9si pont modell k\u00f6z\u00fcl mindegyik legal\u00e1bb egy t\u00e1mad\u00e1si m\u00f3dszernek kitettnek bizonyult, bele\u00e9rtve a DD-WRT \u00e9s OpenWrt firmware-rel rendelkez\u0151 megold\u00e1sokat is.

\"AirSnitch<\/center> <\/p>\n

H\u00e1rom probl\u00e9m\u00e1t emelnek ki, amelyek lehet\u0151v\u00e9 teszik a t\u00e1mad\u00e1st. Az els\u0151 probl\u00e9ma lehet\u0151v\u00e9 teszi az \u00fcgyfelek k\u00f6z\u00f6tti izol\u00e1ci\u00f3 megker\u00fcl\u00e9s\u00e9t a titkos\u00edt\u00e1s be\u00e1ll\u00edt\u00e1sainak helytelen kezel\u00e9se miatt. A m\u00e1sodik probl\u00e9ma az, hogy az izol\u00e1ci\u00f3 \u00e1ltal\u00e1ban MAC vagy IP szinten van alkalmazva, de nem egyszerre mindk\u00e9t szinten. A harmadik probl\u00e9ma a kliensazonos\u00edt\u00f3k megb\u00edzhatatlan szinkroniz\u00e1l\u00e1s\u00e1b\u00f3l ered a h\u00e1l\u00f3zati stack szinten, amely lehet\u0151v\u00e9 teszi, hogy m\u00e1s \u00fcgyfelek bej\u00f6v\u0151 \u00e9s kimen\u0151 forgalm\u00e1t elfogj\u00e1k. <\/p>\n

A modern vezet\u00e9k n\u00e9lk\u00fcli hozz\u00e1f\u00e9r\u00e9si pontok a r\u00e1di\u00f3ad\u00f3 \u00e9s a h\u00e1l\u00f3zati switch (Layer 2 Switch) funkci\u00f3it \u00f6tv\u00f6zik, ahol a switch, ellent\u00e9tben a vezet\u00e9kes h\u00e1l\u00f3zatokkal, a kliens fizikai porthoz kapcsol\u00e1sa helyett logikailag k\u00f6ti \u00f6ssze a vezet\u00e9k n\u00e9lk\u00fcli csatorn\u00e1val. Az ilyen k\u00f6t\u00e9sek eset\u00e9ben a kliens MAC-c\u00edme szolg\u00e1l az azonos\u00edt\u00f3k\u00e9nt, amelyet a csatorn\u00e1val egy speci\u00e1lis MAC-c\u00edm t\u00e1bl\u00e1zatban azonos\u00edtanak. Ha a kliens m\u00e1sik csatorn\u00e1ra v\u00e1lt (p\u00e9ld\u00e1ul 2.4 GHz-r\u0151l 5 GHz-ra), az adatok a t\u00e1bl\u00e1zatban friss\u00fclnek.

\"AirSnitch<\/center> <\/p>\n

A t\u00e1mad\u00e1s az OSI h\u00e1l\u00f3zati modell els\u0151 (fizikai, r\u00e1di\u00f3s) \u00e9s m\u00e1sodik (l\u00e1nc, MAC-c\u00edm) szintjein zajlik, \u00e9s abban \u00e1ll, hogy a t\u00e1mad\u00f3, aki ugyanahhoz a hozz\u00e1f\u00e9r\u00e9si ponthoz csatlakozott, de m\u00e1s frekvencias\u00e1vot haszn\u00e1l, mint az \u00e1ldozat (p\u00e9ld\u00e1ul 2,4 GHz helyett 5 GHz), egy \u00f6sszekapcsol\u00e1si egyezs\u00e9g (4-way handshake) k\u00e9r\u00e9s\u00e9t k\u00fcldi, megadva az \u00e1ldozat MAC-c\u00edm\u00e9t (hasonl\u00f3an az ARP-spoofinghoz Ethernet-h\u00e1l\u00f3zatokban). Mivel az \u00fcgyfelek MAC-c\u00edm alapj\u00e1n azonos\u00edt\u00f3dnak, a hozz\u00e1f\u00e9r\u00e9si pont \u00fagy v\u00e9li, hogy az \u00fcgyf\u00e9l \u00e1tkapcsolt egy m\u00e1sik csatorn\u00e1ra, \u00e9s megv\u00e1ltoztatja a MAC-c\u00edmek t\u00e1bl\u00e1zat\u00e1ban l\u00e9v\u0151 bejegyz\u00e9st. Ezt k\u00f6vet\u0151en minden bej\u00f6v\u0151 forgalom a hozz\u00e1f\u00e9r\u00e9si pontt\u00f3l a t\u00e1mad\u00f3 eszk\u00f6z\u00e9re ker\u00fcl.

\"AirSnitch<\/center>
\"AirSnitch<\/center> <\/p>\n

A k\u00e9tir\u00e1ny\u00fa lehallgat\u00e1s megszervez\u00e9s\u00e9hez a t\u00e1mad\u00f3, miut\u00e1n megkapta a c\u00e9lpontnak k\u00fcld\u00f6tt adatokat, vissza\u00e1ll\u00edtja a MAC-c\u00edmek t\u00e1bl\u00e1j\u00e1nak \u00e1llapot\u00e1t az eredeti \u00e1llapot\u00e1ba. Ehhez egy \u201eICMP Ping\u201d csomagot k\u00fcldve, v\u00e9letlenszer\u0171 MAC-c\u00edmet ad meg, \u00e9s a csomag titkos\u00edt\u00e1s\u00e1t GTK (Csoportos Id\u0151beli Kulcs) kulccsal v\u00e9gzi, amely minden vezet\u00e9k n\u00e9lk\u00fcli h\u00e1l\u00f3zat \u00fcgyf\u00e9l sz\u00e1m\u00e1ra k\u00f6z\u00f6s. A hozz\u00e1f\u00e9r\u00e9si pont, miut\u00e1n megkapta ezt a csomagot, visszaadja a c\u00e9lpont MAC-c\u00edm\u00e9nek k\u00f6t\u00e9s\u00e9t az eredeti vezet\u00e9k n\u00e9lk\u00fcli csatorn\u00e1hoz. A forgalom lehallgat\u00e1sa ciklikus m\u00f3dos\u00edt\u00e1ssal \u00e9s a MAC-c\u00edmek t\u00e1bl\u00e1zat\u00e1nak vissza\u00e1ll\u00edt\u00e1s\u00e1val t\u00f6rt\u00e9nik.

\"AirSnitch<\/center>
\n
Forr\u00e1s: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0418\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u0438 \u0438\u0437 \u041a\u0430\u043b\u0438\u0444\u043e\u0440\u043d\u0438\u0439\u0441\u043a\u043e\u0433\u043e \u0443\u043d\u0438\u0432\u0435\u0440\u0441\u0438\u0442\u0435\u0442\u0430 \u0432 \u0420\u0438\u0432\u0435\u0440\u0441\u0430\u0439\u0434\u0435 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0430\u043b\u0438 (PDF) \u043d\u043e\u0432\u044b\u0439 \u043a\u043b\u0430\u0441\u0441 \u0430\u0442\u0430\u043a \u043d\u0430 \u0431\u0435\u0441\u043f\u0440\u043e\u0432\u043e\u0434\u043d\u044b\u0435 \u0441\u0435\u0442\u0438 — AirSnitch. \u0410\u0442\u0430\u043a\u0438 \u0434\u0430\u044e\u0442 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u043e\u0431\u043e\u0439\u0442\u0438 \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c\u044b \u0438\u0437\u043e\u043b\u044f\u0446\u0438\u0438 \u043a\u043b\u0438\u0435\u043d\u0442\u043e\u0432 \u0432 Wi-Fi \u0441\u0435\u0442\u0438, \u043d\u0435 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0435 \u043a\u043b\u0438\u0435\u043d\u0442\u0430\u043c \u043d\u0430\u043f\u0440\u044f\u043c\u0443\u044e \u043e\u0431\u0440\u0430\u0449\u0430\u0442\u044c\u0441\u044f \u0434\u0440\u0443\u0433 \u043a \u0434\u0440\u0443\u0433\u0443. \u041f\u0440\u0438 \u043d\u0430\u0438\u0445\u0443\u0434\u0448\u0435\u043c \u0441\u0446\u0435\u043d\u0430\u0440\u0438\u0438 \u0430\u0442\u0430\u043a\u0438 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0442 \u0437\u043b\u043e\u0443\u043c\u044b\u0448\u043b\u0435\u043d\u043d\u0438\u043a\u0443 \u043f\u0435\u0440\u0435\u043d\u0430\u043f\u0440\u0430\u0432\u0438\u0442\u044c \u0447\u0435\u0440\u0435\u0437 \u0441\u0435\u0431\u044f \u0442\u0440\u0430\u0444\u0438\u043a \u0436\u0435\u0440\u0442\u0432\u044b (MITM) \u0434\u043b\u044f \u0430\u043d\u0430\u043b\u0438\u0437\u0430 \u0438\u043b\u0438 \u043c\u043e\u0434\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 \u043d\u0435\u0437\u0430\u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432, \u0430 \u0442\u0430\u043a\u0436\u0435 \u043f\u043e\u0434\u043c\u0435\u043d\u0438\u0442\u044c […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":8,"featured_media":162855,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-162854","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47 AirSnitch t\u00e1mad\u00e1s, amely lehet\u0151v\u00e9 teszi az \u00fcgyfelek k\u00f6z\u00f6tti izol\u00e1ci\u00f3 megker\u00fcl\u00e9s\u00e9t a Wi-Fi h\u00e1l\u00f3zatokban | ProHoster","description":"A Riverside-i Kaliforniai Egyetem kutat\u00f3i kifejlesztettek (PDF) egy \u00faj t\u00e1mad\u00e1sos oszt\u00e1lyt a vezet\u00e9k n\u00e9lk\u00fcli h\u00e1l\u00f3zatok ellen - AirSnitch.","canonical_url":"https:\/\/prohoster.info\/hu\/blog\/news\/ataka-airsnitch-pozvolyayushhaya-obojti-izolyacziyu-mezhdu-klientami-v-wi-fi","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"hu_HU","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0410\u0442\u0430\u043a\u0430 AirSnitch, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043e\u0431\u043e\u0439\u0442\u0438 \u0438\u0437\u043e\u043b\u044f\u0446\u0438\u044e \u043c\u0435\u0436\u0434\u0443 \u043a\u043b\u0438\u0435\u043d\u0442\u0430\u043c\u0438 \u0432 Wi-Fi | ProHoster","og:description":"\u0418\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u0438 \u0438\u0437 \u041a\u0430\u043b\u0438\u0444\u043e\u0440\u043d\u0438\u0439\u0441\u043a\u043e\u0433\u043e \u0443\u043d\u0438\u0432\u0435\u0440\u0441\u0438\u0442\u0435\u0442\u0430 \u0432 \u0420\u0438\u0432\u0435\u0440\u0441\u0430\u0439\u0434\u0435 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0430\u043b\u0438 (PDF) \u043d\u043e\u0432\u044b\u0439 \u043a\u043b\u0430\u0441\u0441 \u0430\u0442\u0430\u043a \u043d\u0430 \u0431\u0435\u0441\u043f\u0440\u043e\u0432\u043e\u0434\u043d\u044b\u0435 \u0441\u0435\u0442\u0438 - 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